ServiceWorker: Add UMA to measure execution times of oninstall/onfetch

content/browser/service_worker/service_worker_url_request_job.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/service_worker/service_worker_url_request_job.h"
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/guid.h"
 #include "base/strings/stringprintf.h"
 #include "base/time/time.h"
 #include "content/browser/service_worker/service_worker_fetch_dispatcher.h"
+#include "content/browser/service_worker/service_worker_metrics.h"
 #include "content/browser/service_worker/service_worker_provider_host.h"
 #include "content/common/resource_request_body.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/public/browser/blob_handle.h"
 #include "content/public/browser/resource_request_info.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_response_info.h"
 #include "net/http/http_util.h"
@@ skipping 357 matching lines @@
 
   // Treat a response whose status is 0 as a Network Error.
   if (response.status_code == 0) {
     NotifyDone(
         net::URLRequestStatus(net::URLRequestStatus::FAILED, net::ERR_FAILED));
     return;
   }
 
   fetch_end_time_ = base::TimeTicks::Now();
   load_timing_info_.send_end = fetch_end_time_;
+  ServiceWorkerMetrics::MeasureFetchEventExecutionTime(
+      fetch_end_time_ - fetch_start_time_);
 
   // Set up a request for reading the blob.
   if (!response.blob_uuid.empty() && blob_storage_context_) {
     scoped_ptr<storage::BlobDataHandle> blob_data_handle =
         blob_storage_context_->GetBlobDataFromUUID(response.blob_uuid);
     if (!blob_data_handle) {
       // The renderer gave us a bad blob UUID.
       DeliverErrorResponse();
       return;
     }
@@ skipping 40 matching lines @@
 
 void ServiceWorkerURLRequestJob::DeliverErrorResponse() {
   // TODO(falken): Print an error to the console of the ServiceWorker and of
   // the requesting page.
   CreateResponseHeader(
       500, "Service Worker Response Error", ServiceWorkerHeaderMap());
   CommitResponseHeader();
 }
 
 }  // namespace content